In our lab, we had to do experiments to answer the following questions:
Problems:
Is the frictional force greater when an object is still (static) or sliding? 2) Does the surface area of contact between two surfaces affect the frictional force? 3) Does the type of surface (carpet vs. hard/smooth surface) affect sliding friction? 4) Does the force between two objects (weight) affect sliding friction?
While doing this lab, we were able to answer the given questions and we were able to check if our hypotheses were correct. We didn’t run into many problems, so our data is mostly accurate, in our opinion. In order to finish these experiments, we had to use different materials. These materials were a friction probe and sensor, a spring scale, two wooden blocks, a table (flat, smooth, horizontal surface), and a carpeted floor (flat, bumpy, horizontal floor). As we did our experiments, we had a certain procedure. We decided to use the probe first, then we used the spring scale. We rarely experienced any changes in our data because the same people were doing the experiment. The only change that we experienced in our …show more content…
For Experiment A, we had to find the starting friction of the wide, smooth side of the block. In order to do this, we had to pull the block a little bit every time. After we had finished using the probe and the spring scale, we had seen that the median of Experiment A was 1.6 N. We then did Experiment B, which was to measure sliding friction of the block by pulling the wide, smooth side of the block against the table. This time, we had to just pull the block until a certain point, and then we would take the data. After doing this five times with the probe and spring scale, we could see that the median of the data was 2.0 N on the spring scale and 1.8 N on the probe. We could reason that the frictional force is greater when an object is sliding, therefore, proving our hypothesis
Problems:
Is the frictional force greater when an object is still (static) or sliding? 2) Does the surface area of contact between two surfaces affect the frictional force? 3) Does the type of surface (carpet vs. hard/smooth surface) affect sliding friction? 4) Does the force between two objects (weight) affect sliding friction?
While doing this lab, we were able to answer the given questions and we were able to check if our hypotheses were correct. We didn’t run into many problems, so our data is mostly accurate, in our opinion. In order to finish these experiments, we had to use different materials. These materials were a friction probe and sensor, a spring scale, two wooden blocks, a table (flat, smooth, horizontal surface), and a carpeted floor (flat, bumpy, horizontal floor). As we did our experiments, we had a certain procedure. We decided to use the probe first, then we used the spring scale. We rarely experienced any changes in our data because the same people were doing the experiment. The only change that we experienced in our …show more content…
For Experiment A, we had to find the starting friction of the wide, smooth side of the block. In order to do this, we had to pull the block a little bit every time. After we had finished using the probe and the spring scale, we had seen that the median of Experiment A was 1.6 N. We then did Experiment B, which was to measure sliding friction of the block by pulling the wide, smooth side of the block against the table. This time, we had to just pull the block until a certain point, and then we would take the data. After doing this five times with the probe and spring scale, we could see that the median of the data was 2.0 N on the spring scale and 1.8 N on the probe. We could reason that the frictional force is greater when an object is sliding, therefore, proving our hypothesis